Feature Representation and Database Schema of an Object-Oriented Feature-Based Product Model for Hydraulic Manifold Blocks

The model is developed with C&+: in a Windows environment.     

数控液压机主机结构CAPP系统的构建

数控液压机主机是典型的板材焊接结构。针对该产品的结构特点，构造了CAPP系统框架。并针对板材排料模块，进行了从三维CAD平台SolidWorks到CAPP的信息集成技术研究，解决了排料过程中的自动、手动、数控代码输出及原材料统计等问题。使数控液压机主机结构的制造实现自动化和集成化。     

液压集成阀块 CAD/CAM 方法研究

对液压集成阀块ＣＡＤ／ＣＡＭ现有方法和软件进行了综合分析,提出了ＣＡＤ／ＣＡＭ有效集成的合理途径和新思路。     

集成CAD/CAM/CAPP的网络数控车削系统开发

开发了基于网络制造下的CAD/CAM/CAPP集成的数控车削系统,系统包括车削CAM、在线仿真、CNC驱动以及实时监控等先进制造技术的完整功能,设计了CNC预处理、CNC后处理、CNC协同和CNC监控四个模块的人机交互界面.使用面向制造的设计(DFM)理念,设计和开发了一个全新的车削系统,并在实训中得到了广泛的使用.     

交互式液压集成块的CAD软件研究

研究并建立面向集成式液压系统关键部件液压集成块的八个功能模块, 以AutoCAD R12 作为二次开发平台, 详细地对各功能块之间数据交换、命令实行和用户界面进行设计, 以有效地实现交互式阀块的设计     

基于STEP-NC的CAD/CAPP/CNC系统集成及应用研究

传统数控系统的编程都是基于ISO 6983,其本质是面向过程的,传递到CNC的数控程序丢失了高层信息,使得CNC系统与上游的CAD/CAPP/CAM系统之间不能实现完整的信息传递。STEPNC的出现使CNC系统与其它系统间的信息交流与共享成为了可能。提出了一种基于STEP-NC的CAD/CAPP/CNC系统集成模型,对其实现原理和应用过程进行了介绍,并将其应用在柔性制造系统中,设计了一个基于STEP-NC的柔性制造系统平台。     

基于半创成式原理的轴类零件CAPP系统的研究

以成组技术为基础,采用半创成式生成原理进行轴类零件的工艺过程设计。系统使用ＦＯＸＢＡＳＥ＋ 作为主控语言,用ＡＵＴＯＬＩＳＰ形成零件的工序图。     

Feature-Based Parametric Design of a Gating System for a Die-Casting Die

This paper presents a semi-automated approach for designing the gating system of a die-casting die. This approach combines the P-Q 2 technique and feature-based parametric design for achieving the automatic generation of the geometries for the gating system. It also enables users to integrate their expertise in the design at an early stage. User-defined gating features are pre-defined and stored in a gating library, and are then retrieved from the library and applied to the gating part with the desired parameters and locations during the design process. Algorithms based on the P-Q 2 technique are proposed for calculating the related parameters of the gating system. A prototype design has been developed using this approach, and the system is able to shorten the time for constructing the 3D geometries of the gating elements such as the gate, runner, overflow, shot sleeve, sprue, etc.     

基于Web的数控磨床CAD/CAPP/CAM技术

利用ASP技术,在网页中调用自制组建,实现对数控磨床的网络协同设计,在网上在线生成数控磨床的三维模型(CAD),并在网上在线实现数控磨床的工艺设计(CAPP)及在线加工仿真。充分利用异地分布的设计资源,在有效的协同工作机制和支撑平台工具下,统一信息管理,共同完成数控磨床的设计开发。     

用于复杂曲面加工的液压刨床数控系统的研究

介绍了用于复杂曲面加工的液压刨床的运动原理及其数控系统的软件结构.同时对加工过程中的几个典型问题提出了可行的解决办法.     

CNC programming system for complex components based on KBE within integrated environment of CAD/CAPP/CAM

To promote the research and development of modern digital and intelligent manufacturing technology and overcome shortcomings of computerized numerical control(CNC) programming for complex components, an innovative idea has been proposed to introduce knowledge based engineering (KBE) into the field of CNC programming within the integrated environment of CAD/CAPP/ CAM. This paper constructs the architecture of CNC programming based on KBE within CAD/CAPP/CAM and explores the key technology of applying KBE to CNC programming — knowledge representation, knowledge acquisition, knowledge reasoning, and generalized knowledge base system of CNC programming. The integration of the CAD/CAM system and the CAPP system of enterprises has been achieved by taking the powerful CAD/CAM system of UG NX as a platform. The prototype system of CNC programming for complex components based on KBE within CAD/CAPP/CAM has been developed by means of UG/Open,VC ++ 6.0, and SQL Sever 2000. Finally, a frame example, one of the complex components of a marine diesel, is presented, and the academic production and the intelligence of the system are verified.     

数控压力机快速液压驱动系统的设计分析与试验研究

设计了两种数控压力机快速液压驱动系统方案,在比较分析的基础上选择其一进行了具体实施,通过反复试验,对系统进行了改进和完善.该系统采用快速开关阀控制,结构简单,成本低,达到国外同类产品技术水平.     

基于特征的回转类零件CNC／CAD／CAM集成系统开发研究

针对回转类零件的结构及加工特点,建立了基于特征的全局统一数据模型及在该模型上实现的回转类零件CAD／CAM集成系统的系统结构,以及以该模型为基础的设计制造支持软件体系,构造了基于工业PC机的开放式数控系统的控制软件和应用软件体系框架,并实现了基于开放式数控系统的回转类零件的集成化制造。     

数控教学系统研究与开发

介绍了一套多媒体数控教学系统软件。该系统具有操作面板，可以对NC代码进行编辑、检验，还具备插补仿真、简单G指令仿真等基本数控原理仿真功能，而且可以实现加工预览。     

喷射泵CAD/CAPP/CAM集成系统

设计了喷射泵CAD／CAPP/CAM集成系统的开发平台与系统结构，论述了系统开发过程中的有关技术问题及解决途径，介绍了喷射泵CAD模块零件图的生成过程。     

基于LabVIEW的发动机进气系统仿真研究

基于发动机平均值模型,运用LabVIEW图形化编程功能构建发动机进气系统模型,结合稳态试验数据对模型进行拟合和修正。控制试验发动机在不同转速和节气门开度下稳态运行,并比较试验数据和模型仿真计算值,所得数据误差在＆#177;8％以内。     

A Generative Computer-Aided Process Planning System for Prismatic Components

This paper deals with design and development of a generative computer-aided process planning (CAPP) system for prismatic components and named PSG-CAPP. The proposed CAPP system has been divided into three modules. The first module is concerned with feature extraction. The second and third modules deal with planning the set-up, machine selection, cutting tool selection, cutting parameter selection, and generation of process plan sheet. The whole CAPP system is developed using Visual Basic 6.0 as front end and Oracle 7.3 as back end. The SolidWorks98 plus has been used for modelling, and feature extraction has been implemented using a program written in Visual Basic 6.0. The speciality of the developed CAPP system is that it is linked with the CAD module and it extracts the majority of features automatically prior to process planning. The developed CAPP system has been tested with aerospace components. The main feature of the proposed CAPP system is its ability to handle a variety of prismatic components and generate process plans for them. A case study has been included to highlight the potential of the CAPP system. ID="A1"Correspondance and offprint requests to: Professor P. V. Mohanram, Department of Mechanical Engineering, PSG College of Technology, Peelamedu, Coimbatore 641004, India. E-mail: msadaiah@yahoo.com     

基于ASP的快速可重构CAPP系统研究

针对应用ASP(ApplicationServiceProvider)服务的企业对CAPP系统的需求具有多样性和多变性的特点 ,本文提出了基于ASP的快速可重构CAPP系统 ,采用面向对象的方法进行系统的构件化设计 ,采用EJB组件技术实现构件的组件化 ,并提出通过对系统构件编码来提高重构速度的方法。文中以一个实例说明了CAPP系统的快速重构。     

基于Delphi和AutoCAD的CAD/CAPP集成的软件接口

介绍了基于Ｄｅｌｐｈｉ平台的ＣＡＰＰ系统通过ＤＸＦ文件与ＡｕｔｏＣＡＤ的软件接口,利用ＯＬＥ技术,将工艺设计过程中的文字信息生成环境与工艺的绘图环境相结合,在 ＡｕｔｏＣＡＤ环境下输出工艺卡,较好地解决了现有的许多ＣＡＰＰ系统存在的工序图与工序内容分开编制的问题。     

基于VB液压系统计算的软件开发

液压系统设计一般采用经验设计方法,根据设计者的经验,通过人工进行粗略的计算。在进行液压系统设计时,往往要进行一些复杂的公式计算和大量设计手册数据的查询等工作,使得设计成为一种费时、费力的劳动。针对这种不足,本论文充分利用计算机的高速计算能力,以Visual Basic为平台,开发了液压系统的计算软件。该软件界面简单,使用方便。应用此软件,设计者只要输入相应的参数,就能够按设定的计算公式进行液压系统参数的自动计算,将标准参数存入编制的数据库中,利用VisualBasic访问数据库的功能,自动选取与计算结果相适的标准值,从而缩短了设计时间,减轻了设计难度。